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Vocabulary Words
Electromagnets
Induction
Transformers and Generators
Magnets
100
Any material that attracts iron or materials containing iron
What is a magnet?
100
a coil that has a soft iron core and that acts as a magnet when an electric current is in the coil.
What is an electromagnet?
100
a coil of wire that produces a magnetic field when carrying an electric current
What is a solenoid?
100
a device that converts mechanical energy into electrical energy
What is an electric generator?
100
The two parts of a magnetic field are known as these.
What are the north and south pole?
200
One of two points, such as the ends of a magnet, that have opposing magnetic qualities.
What is a magnetic pole?
200
Created when a wire moves between the poles of a magnet
What is an electric current?
200
If the number of coils is doubled, how does that affect moving a magnet in and out of the coil?
What is "harder to move the magnet?"
200
a device that increases or decreases the voltage of alternating current
What is a transformer?
200
This is created when electrons move around the nucleus and spin in the same direction (NOT electricity)
What are magnetic fields/magnetism?
300
the attraction or repulsion created by spinning electric charges
What is magnetism/magnetic force?
300
Faraday discovered that magnetic fields are created when the_________________ changes.
What is the electric field?
300
If you increase the ___________ in a wire, this strengthens the solenoid's magnetic field (NOT adding more wire)
What is electric current?
300
for energy to get to your home, voltage is _________ at the power plant, then it is ___________ before the current is used.
What is increased/stepped up and decreased/stepped down?
300
To determine whether a metal/material is magnetic or not depends on what?
What is the metal's/materials' atoms?
400
the process of creating a current in a circuit by changing a magnetic field
What is electromagnetic induction?
400
Galvanometers use a(n)___________ to detect electric ____________
What are magnets and current.
400
Moving electric charges will interact with an electric field or a magnetic field or both.
What is both?
400
A transformer that induces a larger current in the secondary coil is known as this.
What is a step-down transformer?
400
In iron, nickel, and cobalt, there are groups of atoms in tiny areas known as these.
What is the domain?
500
a device that converts mechanical energy into electrical energy
What is an electric generator?
500
a device that changes electrical energy into mechanical energy
What is an electric motor?
500
Electric current can be best induced in a wire by.
moving a magnet up and down near the wire
500
A generator works by moving a(n) ____________ across the magnetic field lines of a magnet.
a rotating coil crosses the magnetic field lines of a magnet, inducing electric current in the wire
500
Something that can demagnetize a magnet.
What are high temperatures or severe impact?